Results 31 to 40 of about 916,602 (288)
Influence of different parameters on the decrease of extra-myocardial activity Gated-SPECT studies
Saúde & Tecnologia, 2015 Introduction – Myocardial perfusion imaging (MPI) is one of the most indicated complementary diagnostic exams in cardiovascular disease. Extra myocardial activity is a recurrent problem in the acquisition and evaluation of functional image.
Andreia Rodrigues +4 more
doaj +1 more source
Scaling of conductance through quantum dots with magnetic field [PDF]
, 2015 Using different techniques, and Fermi-liquid relationships, we calculate the variation with the applied magnetic field (up to second order) of the zero-temperature equilibrium conductance through a quantum dot described by the impurity Anderson model. We
Aligia, Armando Ángel +5 more
core +2 more sources
Simulación directa de turbulencia de flujo secundario en ductos con forzado no homogéneo [PDF]
, 2018 La generación de flujo secundario en ductos rectos de sección rectangular se debe exclusivamente a la turbulencia. En muchos flujos ambientales existen efectos de estratificación que afectan la turbulencia y pueden modificar el flujo secundario.
Cantero, Mariano Ignacio +2 more
core +1 more source
Saúde & Tecnologia, 2013 Introdução – A cintigrafia de perfusão do miocárdio (CPM) é um dos exames complementares de diagnóstico mais indicados na patologia cardiovascular. A atividade extramiocárdica é um problema recorrente na aquisição e avaliação da imagem.
Andreia Rodrigues +4 more
doaj +1 more source
KNH2 - KH: a metal amide - hydride solid solution [PDF]
, 2016 We report for the first time the formation of a metal amide-hydride solid solution. The dissolution of KH into KNH2 leads to an anionic substitution, which decreases the interaction among NH2 - ions.
Baricco, Marcello +15 more
core +4 more sources
Emergent low-energy bound states in the two-orbital Hubbard model [PDF]
, 2018 A repulsive Coulomb interaction between electrons in different orbitals in correlated materials can give rise to bound quasiparticle states. We study the nonhybridized two-orbital Hubbard model with intra- (inter)orbital interaction U(U12) and different ...
Hallberg, Karen Astrid +2 more
core +1 more source
Protein pyrophosphorylation by inositol pyrophosphates — detection, function, and regulation
FEBS Letters, EarlyView.Protein pyrophosphorylation is an unusual signaling mechanism that was discovered two decades ago. It can be driven by inositol pyrophosphate messengers and influences various cellular processes. Herein, we summarize the research progress and challenges of this field, covering pathways found to be regulated by this posttranslational modification as ...
Sarah Lampe +3 more
wiley +1 more source
Noise on resistive switching: a Fokker–Planck approach [PDF]
, 2016 We study the effect of internal and external noise on the phenomenon of resistive switching. We consider a non-harmonic external driving signal and provide a theoretical framework to explain the observed behavior in terms of the related Fokker–Planck ...
Fierens, Pablo Ignacio +2 more
core +2 more sources
Nuclear shapes are geometrically determined by the excess surface area of the nuclear lamina
Frontiers in Cell and Developmental Biology, 2023 Introduction: Nuclei have characteristic shapes dependent on cell type, which are critical for proper cell function, and nuclei lose their distinct shapes in multiple diseases including cancer, laminopathies, and progeria.
Richard B. Dickinson +3 more
doaj +1 more source
FEBS Letters, EarlyView.Multidrug transporters BpeB and BpeF from the Gram‐negative pathogen Burkholderia pseudomallei have a hydrophilic patch in their substrate‐binding pocket. Drug susceptibility tests and growth curve analyses using an Escherichia coli recombinant expression system revealed that the hydrophilic patches of BpeB and BpeF are involved in the substrate ...
Ui Okada, Satoshi Murakami
wiley +1 more source